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Code Issues Releases Wiki Activity

Fix ugly output on config errors.

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See RT ticket #17011 for more.
This commit is contained in:
Shane Kerr 2007-08-29 15:56:56 +00:00
parent f800f4f633
commit d19e816ece
2 changed files with 33 additions and 12 deletions
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28
common/conflex.c
View File

@ -200,6 +200,19 @@ static int get_char (cfile)
return c; return c;
} }
/*
* Return a character to our input buffer.
*/
static int
unget_char(struct parse *cfile, int c) {
if (c != EOF) {
cfile->bufix--;
cfile->ugflag = 1; /* do not put characters into
our error buffer on the next
call to get_char() */
}
}
/* /*
* GENERAL NOTE ABOUT TOKENS * GENERAL NOTE ABOUT TOKENS
* *
@ -231,7 +244,6 @@ get_raw_token(struct parse *cfile) {
do { do {
l = cfile -> line; l = cfile -> line;
p = cfile -> lpos; p = cfile -> lpos;
u = cfile -> ugflag;
c = get_char (cfile); c = get_char (cfile);
if (!((c == '\n') && cfile->eol_token) && if (!((c == '\n') && cfile->eol_token) &&
@ -451,9 +463,7 @@ read_whitespace(int c, struct parse *cfile) {
/* /*
* Put the last (non-whitespace) character back. * Put the last (non-whitespace) character back.
*/ */
if (c != EOF) { unget_char(cfile, c);
cfile->bufix--;
}
/* /*
* Return our token. * Return our token.
@ -617,10 +627,7 @@ static enum dhcp_token read_number (c, cfile)
* token. If not EOF, rewind the file one byte so * token. If not EOF, rewind the file one byte so
* the next token is read from there. * the next token is read from there.
*/ */
if(c != EOF) { unget_char(cfile, c);
cfile->bufix--;
cfile->ugflag = 1;
}
goto end_read; goto end_read;
default: default:
@ -655,10 +662,7 @@ static enum dhcp_token read_num_or_name (c, cfile)
c = get_char (cfile); c = get_char (cfile);
if (!isascii (c) || if (!isascii (c) ||
(c != '-' && c != '_' && !isalnum (c))) { (c != '-' && c != '_' && !isalnum (c))) {
if (c != EOF) { unget_char(cfile, c);
cfile -> bufix--;
cfile -> ugflag = 1;
}
break; break;
} }
if (!isxdigit (c)) if (!isxdigit (c))

17
includes/dhcpd.h
View File

@ -254,6 +254,23 @@ struct parse {
const char *tlname; const char *tlname;
int eol_token; int eol_token;
/*
* In order to give nice output when we have a parsing error
* in our file, we keep track of where we are in the line so
* that we can show the user.
*
* We need to keep track of two lines, because we can look
* ahead, via the "peek" function, to the next line sometimes.
*
* The "line1" and "line2" variables act as buffers for this
* information. The "lpos" variable tells us where we are in the
* line.
*
* When we "put back" a character from the parsing context, we
* do not want to have the character appear twice in the error
* output. So, we set a flag, the "ugflag", which the
* get_char() function uses to check for this condition.
*/
char line1 [81]; char line1 [81];
char line2 [81]; char line2 [81];
int lpos; int lpos;